Spray stencil hold-down



C. O. CLARK SPRAY STENCIL HOLD-DOWN Sept. 28, 1943'.

2 Sheets-Sheet 2 Filed Oct. 16, 1941 I Inventor fi/mries a .lar/Z? Attorney Patented Sept. 28, 1943 SPRAY STENCIL HOLD-DOWN Charles 0. Clark, Mount Vernon, 111., assignor of one-half to Le Roy Clark, Mount Vernon, 111.

Application October 16, 1941, Serial No. 415,305 3 Claims. (01. 101-1271 This invention relates to new and useful improvements in stencil holding means, and more particularly to means for mechanically holding a stencil in place while the stencil characters are being sprayed. v

The principal object of this invention is to provide a stencil holding means which will effectively hold a stencil in place against uneven surfaces, to the end that there willbe no blurring or other distortive results.

Other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure 1 represents a front elevational view the holding means applied to a stencil.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a fragmentary detailed sectional View taken substantially on line 3-3 of Figure 1.

Figure 4 is a fragmentary detailed sectional view showing one of the hookbolts.

Figure 5 is a perspective view of one of the eyes.

Referring to the drawings wherein. like numerals designate like parts, it can be seen that numeral 5 denotes a frame of any desired shape which can be propped against the wall or other structure on which stenciling is to be done. As is well known, the sides of steel railroad'cars are frequently found uneven, but the present invention takes care of any uneven surfaces.

The frame 5 is propped in place, clamping the edge portion of a stencil sheet 6 against the surface on which the stenciling is to be done. It can be seen in Figure 1 thatthe stencil sheet t is cut out with character forms I.

In carrying out the present invention, hooks 8 are provided at one end of the frame and over these hooks are disposed certain ends of elongated wires or cords 9, These elongated flexible elements extend to the other end of the frame and are disposed over hook bolts Ill, the bolt portions of which are disposed through openings in the corresponding end of the frame and equipped with wing nuts II, to the end that the elongated flexible elements 9 can be.tightened in place against pressure units generally referred to by numeral 12.

Each of these pressure units comprises a plate l3 which bears against the stencil sheet 6, and a compression spring I 4 which in turn bears against the pressure plate I3 andrhas an eye H3 at its outer end. This eye is preferablyconstructed as shown in Figure 5 of a single piece of strip metal bent at its intermediate portion to form an eye or barrel and is further formed to provide oppositely disposed wing members It, IS for disposition against the corresponding end convolution of the spring M.

The elongated flexible elements 9 are disposed through the eye l5 and when the wing nuts I l are rotated to draw the hooks IE! outwardly, the springs l4 are compressed and the pressure plates l3 exert pressure against the sheet 6 to hold the same snugly against the surface to be stenciled.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the inven- I tion as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. In combination, a stencil sheet, a rectangular frame fitting fiat against said sheet, and means to exert yielding pressure against selected areas of said sheet outwardly of said frame comprisingpresser plates arranged in rows in said frame to bear againstsaid sheet, and means to apply tension against the rows of plates in different degree in each row.

2. In combination, a stencil sheet, a rectangular frame fitting fiat against said sheet, and means to exert yielding pressure against selected areas of said sheet outwardly of said frame comprising presser plates arranged in rows in said frame to bear against said sheet, and means to apply tension against the rows of plates in different degree in each row, said last means comprising c-able-like elements attached to opposite sides of the frame and each bearing against a row of said plates, the attaching means at one side of the frame providing for variably tensioning the elements.

3. In combination, a stencil sheet, a rectangular frame fitting fiat against said sheet, and means to exert yielding pressure against selected areas of said sheet outwardly of said frame comprising presser plates arranged in rows in said frame to bear against sheet, and means to apply tension against the rows of plates in difierent degree in each row, said last means comprising cable-like elements attached to opposite sides of the frame and each bearing against a row of said plates, the attaching means at one side of the frame providing for variably tensioning the elements, and said plates having eye forming members attached thereto through which the elements slidably extend whereby the plates of the rows may be shifted along the elements at will.

CHARLES o. CLARK. 

